I just rebooted phone and PC and now I can transfer the video I did on my ipone but cannot transfer video that was on my wife's iphone to my iphone. She has a 4S and I have a 4. Would that cause a problem.
Reset your iPhone and try again.
Press and hold Power and Home button until Apple logo appears. Release and wait to reboot.
For the old videos try Handbreak to convert them as .mp4
Retrieving data ...